Ensure Peace of Mind with Greenoaks' Insurance Backed Guarantee

We understand how important satisfaction is when investing your hard-earned money in your home. This is why we are proud to say that every product we supply comes with insurance-backed guarantees by HomePro and CERTASS insurance.

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What is an Insurance Backed Guarantee?

Every Greenoak product comes with an Insurance Backed Guarantee (IBG), giving you complete peace of mind long after installation is complete.

We provide our own guarantee on workmanship and materials, and the Insurance Backed Guarantee underwrites that promise. In simple terms, it means that if an issue covered by our guarantee were ever to arise and Greenoak were no longer trading due to insolvency, the insurance would step in to honour the guarantee in line with the policy terms.

An IBG is designed to protect you against events such as liquidation or bankruptcy, ensuring your investment remains protected even in the most unlikely circumstances. Full details of what is covered are clearly set out in the policy wording.

By supplying an Insurance Backed Guarantee with every product we sell, we’re reinforcing our commitment to quality, accountability and long-term customer confidence.

What types of IBGs are available?

You will automatically qualify for an Insurance Backed Guarantee on eligible Greenoak window and door products where glazing makes up more than 50% of the design. We arrange this cover through HomePro, one of the UK’s most established insurance-backed guarantee providers. Depending on your project, the following options may apply:

Warranty Cover 
This provides protection against defective workmanship and faulty materials for the duration of the guarantee period, typically up to 10 years. Cover begins once your installation has been completed.

Deposit & Warranty Cover
In addition to covering workmanship and materials, this option also protects your deposit – up to 25% of the contract value, capped at £10,000. Deposit protection begins when payment is made and runs until work starts or the deposit policy period ends, after which the warranty cover continues.

Our Insurance Backed Guarantees can also extend to multi-site projects and commercial installations, including new-build developments and commercial properties, ensuring the same level of protection regardless of project scale.

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Greenoak Concept & Design have been raising the standards for more than 14 years.

More about us: We’re an independent Essex-based specialists in high quality Tiled Conservatory Roofing, UPVC Windows, Doors, Wall Cladding, and Fascias, Soffits and Guttering.

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CERTASS Certified

Certass, a UKAS Acredited Certification Body, Government Authorised since 2006.

Certass is an organisation which is licenced by the Department for Communities and Local Government. This means that all members are fully vetted and approved to ensure they are in accordance with current Building Regulations.

This means you can have complete peace of mind knowing that every Certass installer has the relevant qualifications and experience.

All Certass double glazing installers must be fully trained and meet strict specifications set by local authorities so you can expect a high standard of workmanship from any Certass registered installer.

TRUSTMARK Certified

TrustMark, the Government Endorsed Quality Scheme covering work a consumer chooses to have carried out in or around their home.

When a Greenoak Concept & Design customers uses a TrustMark Registered Business, they are engaging in an organisation that has been thoroughly vetted to meet required standards, and has made a considerable commitment to good customer service, technical competence and trading practices.

By ensuring all Registered Business adhere to and maintain these standards through our expert network of Scheme Providers, TrustMark gives consumers increased confidence and choice. Additionally, in the event that a problem does arise, TrustMark offers a range of remedies to give further protection to consumers.

TrustMark was established in 2005 in conjunction with Government, industry bodies and consumer protection groups. Since this time, in response to the industry led, Government-commissioned Each Home Counts (EHC) review, the TrustMark remit has expanded to include all Repair, Maintenance and Improvement (RMI), Energy Efficiency and Retrofit measures, providing a level playing field of quality for consumers having work carried out in or around their home.

Greenoak Concept & Design

2026 Sale

10% Discount On All Bookings

Greenoak Concept & Design are offering up to a 10% discount on all orders made before the 27th February 2026. Now is the perfect time to kickstart your project!